/* ========================================================================
 * Copyright (c) 2005-2025 The OPC Foundation, Inc. All rights reserved.
 *
 * OPC Foundation MIT License 1.00
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * The complete license agreement can be found here:
 * http://opcfoundation.org/License/MIT/1.00/
 * ======================================================================*/

using System;
using System.IO;
using System.Runtime.Serialization;
using System.Security.Cryptography.X509Certificates;

namespace Opc.Ua
{
    /// <summary>
    /// The SoftwareCertificate class.
    /// </summary>
    public class SoftwareCertificate
    {
        /// <summary>
        /// The SignedSoftwareCertificate that contains the SoftwareCertificate
        /// </summary>
        public X509Certificate2 SignedCertificate { get; set; }

        /// <summary>
        /// Validates a software certificate.
        /// </summary>
        public static ServiceResult Validate(
            CertificateValidator validator,
            byte[] signedCertificate,
            ITelemetryContext telemetry,
            out SoftwareCertificate softwareCertificate)
        {
            softwareCertificate = null;

            // validate the certificate.
            X509Certificate2 certificate;
            try
            {
                certificate = CertificateFactory.Create(signedCertificate);
                validator.ValidateAsync(certificate, default).GetAwaiter().GetResult();
            }
            catch (Exception e)
            {
                return ServiceResult.Create(
                    e,
                    StatusCodes.BadDecodingError,
                    "Could not decode software certificate body.");
            }

            // certificate is valid.
            return ServiceResult.Good;
        }
    }
}
